公开(公告)号：US20120147502A1

公开(公告)日：2012-06-14

申请号：US13312413

申请日：2011-12-06

申请人： Yuta Udo ,  Mikito Sugiyama ,  Masato Shiimoto ,  Nobuo Yoshida ,  Kenji Sugiura ,  Masashi Hattori

发明人： Yuta Udo ,  Mikito Sugiyama ,  Masato Shiimoto ,  Nobuo Yoshida ,  Kenji Sugiura ,  Masashi Hattori

IPC分类号： G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B2005/0024

摘要： Minute elements are formed while a photo deviation is suppressed between a spin torque oscillator and a main pole and damage is prevented on the ends of the spin torque oscillator in microwave-assisted recording. A magnetic recording head used for microwave-assisted recording includes: a main pole; a spin torque oscillator that is disposed on the main pole and includes a magnetization high-speed rotation layer for rotating magnetization at a high speed by a spin torque; a protective film that is disposed in the track width direction of the spin torque oscillator; an insulating film formed over the wall surfaces of the main pole and the wall surfaces of the protective film; and a magnetic film formed on the insulating film so as to cover at least the main pole.

摘要翻译： 在微波辅助记录中，在自旋转矩振荡器和主极之间抑制光偏移并且在自旋扭矩振荡器的端部上的损伤被防止时形成分钟元件。 用于微波辅助记录的磁记录头包括：主极; 旋转扭矩振荡器，其设置在所述主极上并且包括用于通过自旋转矩高速旋转磁化的磁化高速旋转层; 保护膜，其设置在所述自旋扭矩振子的轨道宽度方向上; 绝缘膜形成在主极的壁表面和保护膜的壁表面上; 以及形成在所述绝缘膜上以至少覆盖所述主极的磁性膜。

公开(公告)号：US08520338B2

公开(公告)日：2013-08-27

申请号：US13312413

申请日：2011-12-06

申请人： Yuta Udo ,  Mikito Sugiyama ,  Masato Shiimoto ,  Nobuo Yoshida ,  Kenji Sugiura ,  Masashi Hattori

发明人： Yuta Udo ,  Mikito Sugiyama ,  Masato Shiimoto ,  Nobuo Yoshida ,  Kenji Sugiura ,  Masashi Hattori

IPC分类号： G11B5/127 ,  G11B5/187

CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B2005/0024

摘要： Minute elements are formed while a photo deviation is suppressed between a spin torque oscillator and a main pole and damage is prevented on the ends of the spin torque oscillator in microwave-assisted recording. A magnetic recording head used for microwave-assisted recording includes: a main pole; a spin torque oscillator that is disposed on the main pole and includes a magnetization high-speed rotation layer for rotating magnetization at a high speed by a spin torque; a protective film that is disposed in the track width direction of the spin torque oscillator; an insulating film formed over the wall surfaces of the main pole and the wall surfaces of the protective film; and a magnetic film formed on the insulating film so as to cover at least the main pole.

摘要翻译： 在微波辅助记录中，在自旋转矩振荡器和主极之间抑制光偏移并且在自旋扭矩振荡器的端部上的损伤被防止时形成分钟元件。 用于微波辅助记录的磁记录头包括：主极; 旋转扭矩振荡器，其设置在所述主极上并且包括用于通过自旋转矩高速旋转磁化的磁化高速旋转层; 保护膜，其设置在所述自旋扭矩振子的轨道宽度方向上; 绝缘膜形成在主极的壁表面和保护膜的壁表面上; 以及形成在所述绝缘膜上以至少覆盖所述主极的磁性膜。

公开(公告)号：US08824103B2

公开(公告)日：2014-09-02

申请号：US13404029

申请日：2012-02-24

申请人： Masato Shiimoto ,  Kenji Sugiura ,  Mikito Sugiyama ,  Isao Nunokawa ,  Yo Sato ,  Katsuro Watanabe ,  Kazuhiko Hosomi ,  Nobuo Yoshida

发明人： Masato Shiimoto ,  Kenji Sugiura ,  Mikito Sugiyama ,  Isao Nunokawa ,  Yo Sato ,  Katsuro Watanabe ,  Kazuhiko Hosomi ,  Nobuo Yoshida

IPC分类号： G11B5/127 ,  G11B5/35 ,  G11B5/235

CPC分类号： G11B5/314 ,  G11B2005/0024

摘要： The strength of a magnetic field applied from a main pole to an oscillator and the strength of a magnetic field applied from the main pole to a recording medium are improved in a magnetic recording head for microwave assisted recording. In the magnetic recording head according to the present invention, an interval between the main pole and a trailing shield at a place in a position above an air bearing surface is larger than an interval between the main pole and the trailing shield on the air bearing surface.

摘要翻译： 用于微波辅助记录的磁记录头改善了从主极施加到振荡器的磁场的强度和从主极施加到记录介质的磁场的强度。 在根据本发明的磁记录头中，在空气轴承表面上方的位置处的主极和后挡板之间的间隔大于空气轴承表面上的主极和后挡板之间的间隔 。

公开(公告)号：US20120113543A1

公开(公告)日：2012-05-10

申请号：US13291580

申请日：2011-11-08

申请人： Masato Shiimoto ,  Mikito Sugiyama

发明人： Masato Shiimoto ,  Mikito Sugiyama

IPC分类号： G11B5/17 ,  G11B21/02

CPC分类号： G11B5/127 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B2005/0024

摘要： A magnetic recording head enabling both enhancement of a strength of a magnetic field from a main pole and provision of narrow-track recording to achieve a high recording density in a high-frequency magnetic field-assisted recording method is provided. An oscillator 110 that generates a high-frequency magnetic field is provided on the trailing side of a main pole 120, and viewed from the air bearing surface side, a ratio Pw/Two between a track width Pw of a trailing-side edge portion of the main pole and a track width Two of a leading-side edge portion of the oscillator is no less than 0.85 and no more than 1.25, and the main pole includes a part having a track width larger than Pw between the trailing-side edge portion and a leading-side edge portion of the main pole.

摘要翻译： 提供一种能够提高来自主极的磁场强度并提供窄轨记录以在高频磁场辅助记录方法中实现高记录密度的磁记录头。 在主极120的后侧设置有产生高频磁场的振荡器110，从空气轴承面侧观察后方侧缘部的轨道宽度Pw与Pw / 主极和轨道宽度振荡器的前侧边缘部分中的两个不小于0.85且不大于1.25，并且主极包括轨道宽度大于后侧边缘部分之间的Pw的部分 和主极的前端侧部分。

公开(公告)号：US08284527B2

公开(公告)日：2012-10-09

申请号：US12957229

申请日：2010-11-30

申请人： Nobuo Yoshida ,  Masato Shiimoto ,  Kenichi Akita ,  Kan Yasui

发明人： Nobuo Yoshida ,  Masato Shiimoto ,  Kenichi Akita ,  Kan Yasui

IPC分类号： G11B5/39

CPC分类号： H01L43/08 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3912 ,  G11B5/398

摘要： A magnetic head, according to one embodiment, includes a sensor film, a sensor cap film provided above the sensor film, a pair of shields including an upper magnetic shield and a lower magnetic shield which serve as electrodes that pass current in a film thickness direction of the sensor film, a track insulating film contacting both sides of the sensor film in the track width direction, a graded domain control film arranged on both sides in the track width direction of the sensor film adjacent the track insulating film, and an element height direction insulating film positioned on an opposite side of the sensor film relative to an air-bearing surface, wherein an edge position of the element height direction insulating film adjacent the sensor film on the air-bearing surface side is substantially the same as an edge position of the sensor cap film in the element height direction.

摘要翻译： 根据一个实施例的磁头包括传感器膜，设置在传感器膜上方的传感器盖膜，包括上磁屏蔽和下磁屏蔽的一对屏蔽件，其用作使电流在膜厚度方向上通过的电极 传感器膜的传感器膜的两侧接触的轨道绝缘膜，布置在邻近轨道绝缘膜的传感器膜的轨道宽度方向两侧的梯度控制膜和元件高度 相对于空气轴承表面定位在传感器膜的相对侧上的方向绝缘膜，其中与空气轴承表面侧相邻的传感器膜的元件高度方向绝缘膜的边缘位置与边缘位置基本相同 传感器盖膜在元件高度方向上。

公开(公告)号：US08537505B2

公开(公告)日：2013-09-17

申请号：US12784405

申请日：2010-05-20

申请人： Masato Shiimoto ,  Kan Yasui ,  Nobuo Yoshida ,  Hiroyuki Takazawa

发明人： Masato Shiimoto ,  Kan Yasui ,  Nobuo Yoshida ,  Hiroyuki Takazawa

IPC分类号： G11B5/39 ,  G11B5/11

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  H01L43/08 ,  H01L43/10

摘要： According to one embodiment, a magnetoresistive effect head includes a lower magnetic shield provided on a substrate, a magnetoresistive effect film laminated from a pinned layer with a pinned direction of magnetization, an intermediate layer, a free layer having a varying direction of magnetization controlled by an applied external magnetic field, a magnetic domain control layer formed with an intervening insulation layer on both sides in a track width direction of the magnetoresistive effect film, an upper magnetic shield, and electrodes for directing sense current flow in a direction perpendicular to a film surface of the magnetoresistive effect film, wherein a magnetic field applied by the magnetic domain control layer to a region away from an ABS of the free layer is at least 1.4 times larger than a magnetic field applied by the magnetic domain control layer to a region near the ABS of the free layer.

摘要翻译： 根据一个实施例，磁阻效应头包括设置在基板上的下磁屏蔽，从具有钉扎方向的钉扎层层压的磁阻效应膜，中间层，具有变化的磁化方向的自由层， 施加的外部磁场，在磁阻效应膜的磁道宽度方向上在两侧形成有中间绝缘层的磁畴控制层，上磁屏蔽和用于引导垂直于膜的方向的感测电流的电极 磁阻效应膜的表面，其中由磁畴控制层施加到远离自由层的ABS的区域的磁场比由磁畴控制层施加到接近的区域的磁场的至少大1.4倍 ABS的自由层。

公开(公告)号：US20100302688A1

公开(公告)日：2010-12-02

申请号：US12784405

申请日：2010-05-20

申请人： Masato Shiimoto ,  Kan Yasui ,  Nobuo Yoshida ,  Hiroyuki Takazawa

发明人： Masato Shiimoto ,  Kan Yasui ,  Nobuo Yoshida ,  Hiroyuki Takazawa

IPC分类号： G11B5/127

CPC分类号： G11B5/3932 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  H01L43/08 ,  H01L43/10

摘要： According to one embodiment, a magnetoresistive effect head includes a lower magnetic shield provided on a substrate, a magnetoresistive effect film laminated from a pinned layer with a pinned direction of magnetization, an intermediate layer, a free layer having a varying direction of magnetization controlled by an applied external magnetic field, a magnetic domain control layer formed with an intervening insulation layer on both sides in a track width direction of the magnetoresistive effect film, an upper magnetic shield, and electrodes for directing sense current flow in a direction perpendicular to a film surface of the magnetoresistive effect film, wherein a magnetic field applied by the magnetic domain control layer to a region away from an ABS of the free layer is at least 1.4 times larger than a magnetic field applied by the magnetic domain control layer to a region near the ABS of the free layer.

摘要翻译： 根据一个实施例，磁阻效应头包括设置在基板上的下磁屏蔽，从具有钉扎方向的钉扎层层压的磁阻效应膜，中间层，具有变化的磁化方向的自由层， 施加的外部磁场，在磁阻效应膜的磁道宽度方向上在两侧形成有中间绝缘层的磁畴控制层，上磁屏蔽和用于引导垂直于膜的方向的感测电流的电极 磁阻效应膜的表面，其中由磁畴控制层施加到远离自由层的ABS的区域的磁场比由磁畴控制层施加到接近的区域的磁场的至少大1.4倍 ABS的自由层。

公开(公告)号：US20100118448A1

公开(公告)日：2010-05-13

申请号：US12615221

申请日：2009-11-09

申请人： Kan Yasui ,  Masato Shiimoto ,  Takeshi Nakagawa ,  Hiroyuki Katada ,  Nobuo Yoshida ,  Hiroyuki Hoshiya

发明人： Kan Yasui ,  Masato Shiimoto ,  Takeshi Nakagawa ,  Hiroyuki Katada ,  Nobuo Yoshida ,  Hiroyuki Hoshiya

IPC分类号： G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/398

摘要： In one embodiment, a differential-type magnetic read head includes a differential-type magneto-resistive-effect film formed on a substrate, and a pair of electrodes for applying current in a direction perpendicular to a film plane of the film. The film includes a first and second stacked film, each having a pinned layer, an intermediate layer, and a free layer, with the second stacked film being formed on the first stacked film. A side face in a track width direction of the film is shaped to have an inflection point at an intermediate position in a thickness direction of the film, and the side face is shaped to be approximately vertical to the substrate in an upward direction of the substrate from the inflection point. Also, the side face is shaped to be gradually increased in track width as approaching the substrate in a downward direction of the substrate from the inflection point.

摘要翻译： 在一个实施例中，差分型磁读头包括形成在基板上的差分型磁阻效应膜和用于在垂直于膜的膜平面的方向上施加电流的一对电极。 膜包括第一和第二堆叠膜，每个具有钉扎层，中间层和自由层，第二堆叠膜形成在第一堆叠膜上。 膜的轨道宽度方向的侧面成形为在膜的厚度方向上的中间位置具有拐点，并且侧面成形为在基板的上方大致垂直于基板 从拐点。 此外，侧面被成形为在从拐点向基板向下方向接近基板的轨迹宽度上逐渐增加。

公开(公告)号：US08223464B2

公开(公告)日：2012-07-17

申请号：US12615221

申请日：2009-11-09

申请人： Kan Yasui ,  Masato Shiimoto ,  Takeshi Nakagawa ,  Hiroyuki Katada ,  Nobuo Yoshida ,  Hiroyuki Hoshiya

发明人： Kan Yasui ,  Masato Shiimoto ,  Takeshi Nakagawa ,  Hiroyuki Katada ,  Nobuo Yoshida ,  Hiroyuki Hoshiya

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/398

摘要： In one embodiment, a differential-type magnetic read head includes a differential-type magneto-resistive-effect film formed on a substrate, and a pair of electrodes for applying current in a direction perpendicular to a film plane of the film. The film includes a first and second stacked film, each having a pinned layer, an intermediate layer, and a free layer, with the second stacked film being formed on the first stacked film. A side face in a track width direction of the film is shaped to have an inflection point at an intermediate position in a thickness direction of the film, and the side face is shaped to be approximately vertical to the substrate in an upward direction of the substrate from the inflection point. Also, the side face is shaped to be gradually increased in track width as approaching the substrate in a downward direction of the substrate from the inflection point.

摘要翻译： 在一个实施例中，差分型磁读头包括形成在基板上的差分型磁阻效应膜和用于在垂直于膜的膜平面的方向上施加电流的一对电极。 膜包括第一和第二堆叠膜，每个具有钉扎层，中间层和自由层，第二堆叠膜形成在第一堆叠膜上。 膜的轨道宽度方向的侧面成形为在膜的厚度方向上的中间位置具有拐点，并且侧面成形为在基板的上方大致垂直于基板 从拐点。 此外，侧面被成形为在从拐点向基板向下方向接近基板的轨迹宽度上逐渐增加。

公开(公告)号：US20110134564A1

公开(公告)日：2011-06-09

申请号：US12957229

申请日：2010-11-30

申请人： Nobuo Yoshida ,  Masato Shiimoto ,  Kenichi Akita ,  Kan Yasui

发明人： Nobuo Yoshida ,  Masato Shiimoto ,  Kenichi Akita ,  Kan Yasui

IPC分类号： G11B21/02 ,  G11B5/60 ,  G11B5/712

CPC分类号： H01L43/08 ,  B82Y25/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3912 ,  G11B5/398

摘要： A magnetic head, according to one embodiment, includes a sensor film, a sensor cap film provided above the sensor film, a pair of shields including an upper magnetic shield and a lower magnetic shield which serve as electrodes that pass current in a film thickness direction of the sensor film, a track insulating film contacting both sides of the sensor film in the track width direction, a graded domain control film arranged on both sides in the track width direction of the sensor film adjacent the track insulating film, and an element height direction insulating film positioned on an opposite side of the sensor film relative to an air-bearing surface, wherein an edge position of the element height direction insulating film adjacent the sensor film on the air-bearing surface side is substantially the same as an edge position of the sensor cap film in the element height direction.

摘要翻译： 根据一个实施例的磁头包括传感器膜，设置在传感器膜上方的传感器盖膜，包括上磁屏蔽和下磁屏蔽的一对屏蔽件，其用作使电流在膜厚度方向上通过的电极 传感器膜的传感器膜的两侧接触的轨道绝缘膜，布置在邻近轨道绝缘膜的传感器膜的轨道宽度方向两侧的梯度控制膜和元件高度 相对于空气轴承表面定位在传感器膜的相对侧上的方向绝缘膜，其中与空气轴承表面侧相邻的传感器膜的元件高度方向绝缘膜的边缘位置与边缘位置基本相同 传感器盖膜在元件高度方向上。